Modelling and Simulation of a Novel Multilevel DC-AC Inverter

In this paper, a Novel multilevel DC-AC inverter has been proposed. The Proposed multilevel inverter (MLI) generates seven level AC output voltage with appropriate gate signals design. Here the operating principles of proposed MLI and voltage balancing of input capacitors are discussed by implementing RSCC circuit to proposed topology of inverter. The MLI is controlled with carrier-wave based Sinusoidal Pulse Width Modulation (SPWM) technique to produce different operating modes to generate respective voltage level at each mode by giving input of 400V DC across the capacitors and generating an output of 220Vrms AC voltage.